Links
[1] https://dominiquedecooman.com/contribtion/drupal-module-jquery-multiselect
[2] http://quasipartikel.at/multiselect/
[3] http://drupal.org/project/jq
[4] http://drupal.org/project/jquery_multiselect
[5] http://drupalmodules.com/module/jquerymultiselect